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Swap two nodes

Written byPhuoc Nguyen
Level 1 — Basic
18 Mar, 2020
The function below swaps two given nodes, `nodeA` and `nodeB`:
const swap = function (nodeA, nodeB) {
const parentA = nodeA.parentNode;
const siblingA = nodeA.nextSibling === nodeB ? nodeA : nodeA.nextSibling;

// Move `nodeA` to before the `nodeB`
nodeB.parentNode.insertBefore(nodeA, nodeB);

// Move `nodeB` to before the sibling of `nodeA`
parentA.insertBefore(nodeB, siblingA);

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Phước Nguyễn